The NexStar 3 enclosure fits a regular 3.5" IDE HDD and is USB2. This easily transportable unit is perfect for backups of important data. Standard 3.5" hard drives are relatively inexpensive and USB2 is compatible with most computer systems. All-aluminum and available in four vivid colors (Steel Grey, Onyx Black, Brilliant Red and Midnight Blue), this is clearly one of the sleekest looking enclosures on the market. Watch the Video to find out more..." ~3dGameMan.com